HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 510

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 12 Serial Communication Interface (SCI)
Rev.3.00 Mar. 26, 2007 Page 468 of 772
REJ09B0355-0300
transition. To perform transmission with the DTC after the relevant mode is cleared, setting TE
and TIE to 1 will set the TXI flag and start DTC transmission.
Figure 12.23 Sample Flowchart for Mode Transition during Transmission
Read TEND flag in SSR
<Start of transmission>
Transition to software
standby mode, etc.
standby mode, etc.
Exit from software
operating mode?
<Transmission>
Yes
Yes
Yes
transmitted?
Initialization
TEND = 1?
Change
All data
TE = 0
[2]
No
No
No
TE = 1
[1]
[3]
[1] Data being transmitted is interrupted.
[2] If TIE and TEIE are set to 1, clear
[3] Includes module stop mode.
After exiting software standby mode,
etc., normal CPU transmission is
possible by setting TE to 1, reading
SSR, writing TDR, and clearing
TDRE to 0, but note that if the DTC
has been activated, the remaining
data in DTCRAM will be transmitted
when TE and TIE are set to 1.
them to 0 in the same way.